The Phase Transitions of Hetero Atoms Substituted Molecular Sieves Me-VPI-5(Me=Mg,Ti,Sn,Si)and Their Influence on Spectra structures of Eu(Ⅲ)Ion

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (3): 345.

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The Phase Transitions of Hetero Atoms Substituted Molecular Sieves Me-VPI-5(Me=Mg,Ti,Sn,Si)and Their Influence on Spectra structures of Eu(Ⅲ)Ion

SUN Jia-Yao¹, DU Hai-Yan¹, PANG Wen-Qin², SHI Chun-Shan³

1. Department of Petrochemical Engineering, Fushun Petroleum Institute, Fushun 113001;
2. Department of Chemistry, Jilin Uniuersity, Changchun;
3. Laboratory of Rare Earth Chemistry and Physics, Changchun Institue of Applied Chemistry Academa Sinica, Changchun

Received:1995-03-03 Online:1996-03-24 Published:1996-03-24

Abstract

Abstract: The hetero atom substituted aluminophosphate molecular sieves Me-VPI-5(Me=Mg,Ti,Sn,Si)were synthesized hydrothermally.Rare earth ions originally doped into these microporous materials by aqueous solution ion exchange procedures.The phase transitions of the microporous materials are investigated by high-temperature and high-pressure experimental techniques,The influence of the phase transitions on the rare earth ions'spectral structures is discussed.With the increase of temperature,Eu(Ⅲ)Mg-VPI-5 is converted into Eu(Ⅲ)Mg-AlPO₄-8,then into tridymite phase.The pressure has a notable influence on Eu(Ⅲ) ion's spectral structures.The spectral structures have changed regularly with the increase of pressure.

Key words: Molecular sieve, Phase transition, Europium ion, Luminescence spectrum

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SUN Jia-Yao, DU Hai-Yan, PANG Wen-Qin, SHI Chun-Shan. The Phase Transitions of Hetero Atoms Substituted Molecular Sieves Me-VPI-5(Me=Mg,Ti,Sn,Si)and Their Influence on Spectra structures of Eu(Ⅲ)Ion[J]. Chem. J. Chinese Universities, 1996, 17(3): 345.

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The Phase Transitions of Hetero Atoms Substituted Molecular Sieves Me-VPI-5(Me=Mg,Ti,Sn,Si)and Their Influence on Spectra structures of Eu(Ⅲ)Ion

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